\(B=\frac{1}{199}+\frac{2}{198}+\frac{3}{197}+....+\frac{198}{2}+\frac{199}{1}\)
\(=\left(\frac{1}{199}+1\right)+\left(\frac{2}{198}+1\right)+\left(\frac{3}{197}+1\right)+.....+\left(\frac{198}{2}+1\right)+\frac{200}{200}\)
\(=200\left(\frac{1}{100}+\frac{1}{199}+\frac{1}{198}+....+\frac{1}{2}\right)\)
= 200.A
=> A:B=\(\frac{1}{200}\)
tính a /b
A=1/2+1/3+1/4+..+1/200
B=1/199+2/198+3/197+...+198/2+199/1
Tính A/B biết:
A=1/2+1/3+1/4+...+1/200
B=1/199+2/198+3/197+...+198/2+199/1
tính A/B biết:
A=1/2+1/3+1/4+...+1/200
B=1/199+2/198+3/197+...+198/2+199/1
Tính A/B biết rằng:
A=1/2+1/3+1/4+...+1/200
B=1/199+2/198+3/197+...+198/2+199/1
tinh A/B biet rang:
A=1/2+1/3+1/4+...+1/200
B =1/199+2/198+3/197+...+198/2+199/1
Tính A/B, biết rằng:
A=1/2+1/3+/4+...+1/200
B=1/199+2/198+3/197+...+198/2+199/1
tính A/B biết
A= 1/2+1/3+1/4+....+ 1/200
B= 1/199+2/198+3/197+....+198/2+199/1
phân số /
Tính A/B biết:
A = 1/2 + 1/3 + 1/4 + ... + 1/200
B = 1/199 + 2/198 + 3/197 + ... + 199/1
S = 1 . 200 + 2 . 199 + 3 . 198 + 4 . 197 + ........ + 199 . 2 + 200 .1
